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aeronautical charts (new and old) to verify navigation fixes
prior to departure. If an amended chart is published for the
procedure, the operator must not use the database to
conduct the operation.
31 JULY 08
AIP ENR 1.18−7
United States of America 15 MAR 07
Federal Aviation Administration Nineteenth Edition
3.4.5 Pilots must extract procedures, waypoints,
navaids, or fixes by name from the onboard
navigation database and comply with the charted
procedure or route.
3.4.6 For the purposes described in this paragraph,
pilots may not manually enter published procedure or
route waypoints via latitude/longitude, place/bearing,
or place/bearing/distance into the aircraft
system.
3.5 Operational Requirements for Departure and
Arrival Procedures
3.5.1 Pilots of aircraft with standalone GPS
receivers must ensure that CDI scaling (full−scale
deflection) is either 1.0 NM or 0.3 NM.
3.5.2 In order to use a substitute means of navigation
guidance on departure procedures, pilots of aircraft
with RNAV systems using DME/DME/IRU, without
GPS input, must ensure their aircraft navigation
system position is confirmed, within 1,000 feet, at the
start point of take−off roll. The use of an automatic or
manual runway update is an acceptable means of
compliance with this requirement. A navigation map
may also be used to confirm aircraft position, if pilot
procedures and display resolution allow for compliance
with the 1,000−foot tolerance requirement.
3.6 Operational Requirements for Instrument
Approach Procedures
3.6.1 When the use of RNAV equipment using GPS
input is planned as a substitute means of navigation
guidance for part of an instrument approach
procedure at a destination airport, any required
alternate airport must have an available instrument
approach procedure that does not require the use of
GPS. This restriction includes conducting a conventional
approach at the alternate airport using a
substitute means of navigation guidance based upon
the use of GPS. This restriction does not apply to
RNAV systems using WAAS as an input.
3.6.2 Pilots of aircraft with standalone GPS
receivers must ensure that CDI sensitivity is 1 NM.
NOTE−
If using GPS distance as an alternate or substitute means
of navigation guidance for DME distance on an instrument
approach procedure, pilots must select a named waypoint
from the onboard navigation database that is associated
with the subject DME facility. Pilots should not rely on
information from an RNAV instrument approach
procedure, as distances on RNAV approaches may not
match the distance to the facility.
3.7 Operational Requirements for Specific
Inputs to RNAV Systems:
3.7.1 GPS
3.7.1.1 RNAV systems using GPS input may be used
as an alternate means of navigation guidance without
restriction if appropriate RAIM is available.
3.7.1.2 Operators of aircraft with RNAV systems
that use GPS input but do not automatically alert the
pilot of a loss of GPS, must develop procedures to
verify correct GPS operation.
3.7.1.3 RNAV systems using GPS input may be used
as a substitute means of navigation guidance
provided RAIM availability for the operation is
confirmed. During flight planning, the operator
should confirm the availability of RAIM with the
latest GPS NOTAMs. If no GPS satellites are
scheduled to be out−of−service, then the aircraft can
depart without further action. However, if any GPS
satellites are scheduled to be out−of−service, then the
operator must confirm the availability of GPS
integrity (RAIM) for the intended operation. In the
event of a predicted, continuous loss of RAIM of
more than five (5) minutes for any part of the route or
procedure, the operator should delay, cancel, or
re−route the flight as appropriate. Use of GPS as a
substitute is not authorized when the RAIM
capability of the GPS equipment is lost.
NOTE−
The FAA is developing a RAIM prediction service for
general use. Until this capability is operational, a RAIM
prediction does not need to be done for a departure or
arrival procedure with an associated “RADAR
REQUIRED” note charted or for routes where the
operator expects to be in radar coverage. Operators may
check RAIM availability for departure or arrival
procedures at any given airport by checking approach
RAIM for that location. This information is available upon
request from a U.S. Flight Service Station, but is no longer
available through DUATS.
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